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Two thin, long, parallel wires, separate...

Two thin, long, parallel wires, separated by a distance 'd' carry a current of 'i' A in the same direction. They will

A

attract each other with a force of

B

repel, each other with a force of `(mu_(0)l^(2))/((2pid))`

C

attract, each other with a force of `(mu_(0)l^(2))/((2pid^(2)))`

D

repel each other with a force of `(mu_(0)l^(2))/((2pid^(2)))`

Text Solution

Verified by Experts

The correct Answer is:
1
The force per unit length between the two wires is
`F/1=mu_(0)/(4pi),(2i_(2))/d=(mu_(0)i^(2))/(2pid)`
The force will be attractive as current directions in both are some.
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